Downloader continues .part file of different format -> Broken video file

[Unrud]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2020.01.01
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'LXb3EKWsInQ', '-f', '22']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.01.01
[debug] Python version 3.7.4 (CPython) - Linux-4.15.0-74-generic-x86_64-with-glibc2.2.5
[debug] exe versions: ffmpeg 4.2.2, ffprobe 4.2.2, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] LXb3EKWsInQ: Downloading webpage
[youtube] LXb3EKWsInQ: Downloading video info webpage
[debug] Invoking downloader on 'https://r3---sn-4g5e6ns7.googlevideo.com/videoplayback?expire=1578835417&ei=eckaXu3UBoTK1gLdmI3YDw&ip=2a03%3A7500%3A836%3A5600%3Adc9f%3Ae230%3A5f51%3A9d66&id=o-AM27C-OUPCZba9GAOETJb1A5aQ4IGU9-PPjG_iUELwcb&itag=22&source=youtube&requiressl=yes&mm=31%2C26&mn=sn-4g5e6ns7%2Csn-5hne6nsz&ms=au%2Conr&mv=m&mvi=2&pl=32&initcwndbps=1580000&vprv=1&mime=video%2Fmp4&ratebypass=yes&dur=313.840&lmt=1578718518076912&mt=1578813758&fvip=3&fexp=23842630&c=WEB&txp=5532232&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cvprv%2Cmime%2Cratebypass%2Cdur%2Clmt&sig=ALgxI2wwRQIhAK_VWqaZ1wCA4_1LHIoV_iXCcRBVolQgWXO8u-cHGYmKAiBSxugiDAB1oPb1XDyVSF-QLZ2HI8emXk5xLfO89ZXrpw%3D%3D&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRgIhANx0ChGlmokKFfEPZBOOtIbcTj9aTdJqLlkvpx8pc5dVAiEA6af9Xxy-r_Fnuah4PZMJWMHL0kN-1rBDT-MELQoaZK0%3D'
[download] Destination: COSTA RICA IN 4K 60fps HDR (ULTRA HD)-LXb3EKWsInQ.mp4
[download]   6.4% of 62.44MiB at  5.41MiB/s ETA 00:10^C
ERROR: Interrupted by user

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'LXb3EKWsInQ', '-f', '18']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.01.01
[debug] Python version 3.7.4 (CPython) - Linux-4.15.0-74-generic-x86_64-with-glibc2.2.5
[debug] exe versions: ffmpeg 4.2.2, ffprobe 4.2.2, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] LXb3EKWsInQ: Downloading webpage
[youtube] LXb3EKWsInQ: Downloading video info webpage
[debug] Invoking downloader on 'https://r6---sn-4g5edne6.googlevideo.com/videoplayback?expire=1578835426&ei=gskaXtG3G4HlgAfMiY2AAw&ip=2a03%3A7500%3A836%3A5600%3Adc9f%3Ae230%3A5f51%3A9d66&id=o-ALVU-50ziXyTAnyYs9AFLuGEH7IN4uSRl0PVsC6mvwno&itag=18&source=youtube&requiressl=yes&mm=31%2C29&mn=sn-4g5edne6%2Csn-4g5e6ns7&ms=au%2Crdu&mv=m&mvi=5&pl=32&initcwndbps=1642500&vprv=1&mime=video%2Fmp4&gir=yes&clen=25723769&ratebypass=yes&dur=313.840&lmt=1578715690501077&mt=1578813699&fvip=3&fexp=23842630&c=WEB&txp=5531232&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cvprv%2Cmime%2Cgir%2Cclen%2Cratebypass%2Cdur%2Clmt&sig=ALgxI2wwRgIhANcpdnLqFBLiSjlXF33CxU8vo6If7ttgQ2n172NYqFgIAiEArpPgeRdGN0uO_qB_dzB8MPY0oNngVgRS9m7LvTHugC8%3D&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRAIgfsVIwc5NZzplG4JfGE5n2pbVmdR3GR6IJLS0zDni8JICIHtZYW0HfWyEHEH8HSLlvwGwqP_nKCMcQiVO37CJuN6P'
[download] Resuming download at byte 4193280
[download] Destination: COSTA RICA IN 4K 60fps HDR (ULTRA HD)-LXb3EKWsInQ.mp4
[download] 100% of 24.53MiB in 00:03

Description

Downloading part of a video with one format and continuing the download with a different format results in a broken video file. The downloader resumes the download of the new format from the partial download of the old format.

The format_id should be included in the partially downloaded file to prevent this.

[dstftw]

It's your responsibility to include format_id if you start using such scenarios.